According to Us Weekly, Barbara was Sinatra's fourth and final wife (Farrow was his third), and was married to Sinatra for 22 years, until his death at age 82 in 1998. In the Vanity Fair interview, Farrow said despite divorcing Sinatra in 1968 after only two years of marriage, the pair continued a relationship for years. When asked, Farrow said it was "possible" that her son Ronan was actually Sinatra's offspring.

In this Sept. 22, 2011 file photo released by the United Nations Foundation, Ronan Farrow, Special Adviser to the Secretary of State for Global Youth Issues, speaks during the Social Good Summit in New York. (AP Photo/United Nations Foundation, Gary He)

Barbara told the Desert Sun that the story was "a phony deal," and pointed out that Ronan was not named in Sinatra's estate.

Right. Well, that ties it all up, then. Because illegitimate children are always the first ones listed in the will of a very public person.

Sinatra's daughter Nancy Sinatra, meanwhile, told Vanity Fair that Ronan -- a journalist, lawyer and human rights activist -- was "a big part of us, and we are blessed to have him in our lives."

After the interview went public Wednesday, Ronan tweeted "Listen, we're all possibly Frank Sinatra's son."

So, that's why I sing so well ...

Allen's rep told the Hollywood Reporter "The article is so fictitious and extravagantly absurd that he is not going to comment."